Filippov, A.F. Differential equations with discontinuous righthand sides/ A.F. Filippov - Dordrecht: Kluwer Academic Publishers, 1988. - ix, 304 p. : ill. ; 25 cm. ISBN: 9789027726995 Subjects--Topical Terms: Differential equationsMathematics Dewey Class. No.: 515.35 / FIL/D